Window ventilator



Jan. 29, 1957 F. N. CANNING 2,779,402

WINDOW VENTILATOR Filed July 2o, 1954 2 shew-sheet 1 J mmf:

Jan. 29, 1957 F. N. cANNlNG 2,779,402

WINDOW VENTILATOR Filed July 20, 1954 2 Shee'ts-Sheet 2 United StatesPatent O WINDW VENTILATOR Frederick N. Canning, Birmingham, Mich.

Application July Ztl, 1954, Serial No. 444,430

7 Claims. (Cl. 160-102) This invention generally relates to windowventilator lou-vers and more particularly pertains to an integrallycomplete expandable and collapsible window ventilator unit which onlyrequires attachment to the bottom sash,

Window ventilators have been employed heretorore to facilitate having awindow open for air and to prevent wind, rain, snow, etc. from enteringthe room and so that a View through the opening is blocked to insureprivacy. However, the several devices of the prior art have not provenentirely satisfactory inasmuch as they are complicated in design andconstruction, expensive to manufacture, diiiicult to use, and to mountin that special apertures, guides, and other means must be provided.

With the foregoing in View, the primary object of the invention is toprovide an extendable and collapsible window ventilator louver set whichis simple in design and construction, simple to install and use, andwhich does not require special apertures to be formed in the frame,extra guides, or co-operation with the sash guides of the window frame.

An object of the invention is to provide a ventilator unit assemblywhich requires only two screws to attach the unit to a sash in fulloperating condition.

An object of the invention is to provide a ventilator unit assemblywhich does not obstruct or encumber the appearance of the window.

An object of the invention is to provide a ventilator unit which easilychanges from a spring-pressed locked storage position to an expanded orextended operative position.

An object of the invention is to provide a ventilator unit which hasvertically positionable arms for holding and supporting the louvers inan expanded condition which makes the arms movable to a horizontallocking position for holding the louvers in a collapsed condition.

An object of the invention is to provide staggered steps on the arms inco-operation, relatively enlarged openings in the louver strips forspacing, and inclining, and supporting the louver strips.

An object of the invention is to provide a window ventilator which canbe operated and mounted with ease by anyone. l

An object of the invention 'is to provide a window ventilator unit whichcan be fitted to all sized windows simply by cutting off the eXtra widthends provided such as with tin snips or a heavy pair of householdshears.

An object of the invention is to provide a window ventilator unitcomposed of reversable parts so that tooling and die costs are reducedto a minimum and this benefit passed along to the public at a lower costper unit.

These and other objects of the invention will become apparent byreference to the following description of a window ventilator louverunit embodying the invention taken in connection with the accompanyingdrawings in which:

Fig. l is an elevational view of the Iinventive device mounted on apartially shown sash with the louver strips extended.

Fig. 2 is a view similar to Fig. 1 showing the louver 2,779,402 PatentedJan. 29, i957 ice i elements in a raised position with `the supportingand positioning arms in the lower position in solid lines `and 'theraised clamping position in dotted lines.

Fig. 3 is a cr0ss-sectional View of Fig. 4 taken Ion the line 3-3thereof.

Fig. 4 is a cross-sectional view of Fig. 3 taken on the line 4-4thereof.

Fig. 5 is a relatively enlarged cross-sectional View of oneend of theunit such as seen in the cutaway portion ot Fig. 2.

Fig. 6 is a cross-sectional view of Fig. 4 'taken on the line 6-6thereof.

Fig. 7 is a perspective view of the stepped positioning and locking armor leg; and

Fig. 8 is a perspective View of the arm supporting bracket.

Referring now to the drawing, wherein like numerals refer to like andcorresponding parts throughout the several ends, the Window ventilatorunit disclosed to illustrate the inventive device comprises an attachingplate lil secured to the bottom. cross piece S of the window sash, suc'has by the two screws lll at either end thereof with the device beingdesigned to tit between the jam point-s I-l of the window frame and toextend downwardly to the sill portion S as `adjusted by raising andlowering the sash S with the device attaching thereon.

More particularly, the inventive device comprises a mounting plate lt)which is substantially lm-shaped in cross-section having a rst `side l2attached to the sash bottom cross piece S as by lthe screws 11 at eitherend thereof and a second outwardly extending side i3 which projectsoutwardly from 'the sash S. It is to be noted lthat the Lshaped supports14 can be mounted at either end of the mounting plate as shown `and spotwelded thereto as at l5, if desired, to reinforce the mounting platelil. However, in the event that heavier gage material is employed in thel..shaped mounting plate l0, then the `brackets ld can be dispensedwith; Kin the event that the plate 1t) is dispensed with, the L-shapedsupports 14 can be used to mount the device on the sash S.

Looped supports or brackets lo are spot welded to the supports 1.4 orthe side i3 of the bracket 10 at either end of the device and it is tobe noted that these looped brackets depend downwardly and are equippedwith a key-hole slot for receiving the head ot the bolt lil therein. andthat the paired stepped arms 2li land 2l are connected `to the loopedsupports 16 and 16A as by the bolt 13 and nut 22 with the spring 23disposed between the nut 22 and the top portion of a member 24 attachedto the legs or arms 21 so as to urge the top of portion 24 of the arms2t) and 21 into spring pressed contact with. the bottom portion 18A orthe side portion LSB of the looped. brackets or supports 18. The legsZtl and 2l are equipped with inwardly bent ears 27 and 28 for aligningthe legs or arms 20 and 2l in the plane of lthe looped lsupports lo andrelative to the supporting plate itil and the sash Due to the fact thatthe lees or arms 2li and 2l Iare spring pressed against the flatportions lSA or liB of the looped brackets lid, -it can be seen thatthey are spring biased and held in the positions of Figs. 2, 3, 4, and5. Due to the spring pressure avainst the flat surfaces the anne 2d and21 will remain in place in the manually located position.

The `stepped arms 2li and 2l, are substantially l. -shaped incross-section with each leg being stepped progressivelyoutwardly-downwardly to provide paired staggered spaced supporting steps3l, 32, 33, 34, and 35 on the outside portion of the U-shapedcross-sectional portion itl of the arms 29 and 21 and 'stepped portions3M., 32A, 33A, 34A, and 35A on the inside cross-sectional portion 4l ofthe U-shaped arms 2t) and 2l and it is to be further noted that theoutwardly downwardly progressively stepped portions Iare in turnstaggered and olset from one another to provide inclined or cantedsupport points such as seen in Figs. 6 and 7 The louver strips 5l, 52,53, 54, and 55 are equipped with increasingly graduated size aperturesrespectively from top to bottom such as designated in Fig. l as 51A,52A, 53A, 54A, and 55A and it is 'to be noted that these apertures aregraded in `size from top to bottom on an increasingly large scale andthat the larger apertures bypass the smaller steps and slide down thearms Ztl and 21 until they engage their predetermined and designatedproper steps or support points on the arms 2d and and due to `the factthat the support points on the arms 2@ and 2l are inclined outwardly,downwardly relative to one another, the louver strips also inclineoutwardly and downwardly to provide the proper screening and shadingcharacteristics. The L-shaped cover member dit is equipped with a topside 6l which is secured to the second leg i3 of the support or plate l@by sheet metal screws `so as to be readily removable therefrom and adownwardly depending second leg 62 for covering the storage area of thelouver strips, arms and 21, and looped brackets lid.

Considered in the operation of the device, the user moves the arms 2dand 2l from the position as seen in Fig. 5 to the position as seen inFig. 2 and then allows the louver elements Si and 56 drop down `on thearms 2d and 2li so that they will selfposition themselves on thestaggered canted steps as in Fig, l.

Considering that the device is in the position of Fig. l, the userelevates the louver strips 51 through 55 to the position of Fig. andthen moves the arms 2@ and 121i `to the position seen in Fig. l and Fig.5 whereby `they lock the iouver strips in position underneath the covermember 6i? where they are protected from the weather and screened fromView.

lt is to Vbe noted that the arm members 29 and 2l can be removed fromthe looped brackets 16 by moving the head of the bolt 1S up to theaperture of the key-hole slot whereby the 'head of the bolt will moveout of the looped bracket so that all the elements can be removed landcleaned, repaired, painted, or replaced. To remount the legs 2@ and 2lon the looped bracket lr6 it is only necessary to place a tool or theusers thumb against the bottom of the screw and force the screw throughthe slot 17 and then slide the head of the Vscrew into the slot por tionof the looped bracset 16.

ln addition to the means shown, it `is obvious that mechanicallyequivalent means can be employed within the perview of the invention soas to come within the scope of the appended claims.

The invention with the above described features constitutes a compact,durable, neat appearing mechanism easy to install, repair', and usewhile at the same time constituting an inexpensively manufactured itemand an 4attractive home addition which is extremely useful.

Although but a single embodiment of the invention has been shown anddescribed in detail, it is obvious that many changes may be made in thesize, shape, detail, and arrangements and the various elements in theinvention within the scope of the appended claims. For example variousparts shown separate in the drawings and description can be combinedsuch as the plates 10 and 60 as by using a U-shapcd channel member. Itis also obvious that `a spring pressed detent mechanism can be employedlt0 locate the arms in the vertical and horizontal positions.

I claim:

1. A window ventilator unit for mounting on the bottom cross piece of awindow sash comprising a mounting plate substantially inverted L-shapedin cross section adapted to have the rst side thereof attached to thesash bott-om cross piece such as by a screw adjacent either end thereofand the second side thereof to extend outwardly of the Sash over the rstside; looped brackets depending from said plate second side adjacenteither end thereof, paired stepped arms swingably connected to saidlooped brackets movable thereon from a vertical to a horizontal position'and vice versa, springs disposed between said brackets and said armsdisplaceably biasing said brackets in both the vertical and horizontalpositions; said arms being substantially U-shaped in. cross section witheach thereof being stepped supports; said paired supports bezug ott-se"rom one another to provide inclined support points; louver strips onsaid arms having increasingly graduated size apertures from top tobottom so as to selectively engage said arm strip inclined supportpoints so to equally space said strips from top to bottom and said armsat an outwardly declining angle, and a substantialiy L-shape covermember having its iirst side overlying `and attached to said supportsecond side and its second side opening ldepending downwardly over saidlooped brackets; said strips being upwardly manually movable under saidcover second side and said arms manuali'y swingably movable to theirhorizontal `spring pressed position to lock said strips and themselvesbehind said cover second side.

2. A Window ventilator unit for mounting on the cross piece of a Windowsash comprising paired mounting brackets attached to a sash Iadjacenteither end thereof having a portion extending outwardly therefrom,paired looped brackets 'having key-hole slots depending from saidmounting brackets, outwardly stepped supporting arms swingably att-achedto said looped brackets from a vertical position to a horizontalposition and vvice versa,

louver strips having apertures for receiving said looped brackets `andsaid arms; said strip apertures being graduated in size to izo-operatewith seid arm steps so as to be self-positioning when said arms are inthe vertical position; said strips being loca't-able in the area of saidlooped brackets so that said arms iock said strips in that area whensaid arms are moved to the horizontal position.

3. A window ventilator comprising `support brackets for securing thedevice to a window sash, extending portions on said brackets, dependingportions on said extending portions, arms pivotally mounted on saiddepending por tions ladapted to pivot between vertical and horizontalpositions, step portions on said arms, and louver strips disposed onsaid depending portions and said arms via apertures in said louvers;said louver apertures being of progressively increased size to`co-operate with said arm strip step portion to properly locate saidlouver strips when said arms are disposed vertically; said louver stripsbeing secured in the area of said depending portions by pivoting saidarms to their horizontal position.

4. In a device as set forth in claim 3, springs biasing said arms intotheir horizontal position.

5. In a device as set forth in claim 3, springs 'biasing said arms inboth their vertical and horizontal positions.

6. In a device as set forth in claim 3, an attaching plateinterconnecting with said support brackets.

7. In a ydevice as set forth in claim 3, a cover member extending overthe top area of said brackets over the outside area of said lbracketdepending portions so as to conceal and protect said brackets, arms, andlouver strips when said arms are in `their horizontal position.

References Cited in the le of this patent UNITED STATES PATENTS 993,654Conant May 30, 1911 1,552,612 Kelley Sept. 8, 1925 2,470,433 Davis May17, 1949

